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  <title>Deletes entire content of the user cache</title>
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  <div id="layout-content"><div id="function.wincache-ucache-clear" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">wincache_ucache_clear</h1>
  <p class="verinfo">(PECL wincache &gt;= 1.1.0)</p><p class="refpurpose"><span class="refname">wincache_ucache_clear</span> &mdash; <span class="dc-title">
   Deletes entire content of the user cache
  </span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.wincache-ucache-clear-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>wincache_ucache_clear</strong></span>
    ( <span class="methodparam">void</span>
   ) : <span class="type">bool</span></div>

  <p class="para rdfs-comment">
   Clears/deletes all the values stored in the user cache.
  </p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-function.wincache-ucache-clear-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>TRUE</code></strong>， 或者在失败时返回 <strong><code>FALSE</code></strong>。
  </p>
 </div>

 <div class="refsect1 examples" id="refsect1-function.wincache-ucache-clear-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-623">
    <p><strong>Example #1 using <span class="function"><strong>wincache_ucache_clear()</strong></span></strong></p>
    <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />wincache_ucache_set</span><span style="color: #007700">(</span><span style="color: #DD0000">'green'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">wincache_ucache_set</span><span style="color: #007700">(</span><span style="color: #DD0000">'red'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">2</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">wincache_ucache_set</span><span style="color: #007700">(</span><span style="color: #DD0000">'orange'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">4</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">wincache_ucache_set</span><span style="color: #007700">(</span><span style="color: #DD0000">'blue'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">8</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">wincache_ucache_set</span><span style="color: #007700">(</span><span style="color: #DD0000">'cyan'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">16</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$array1&nbsp;</span><span style="color: #007700">=&nbsp;array(</span><span style="color: #DD0000">'green'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'red'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'orange'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'blue'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'cyan'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">wincache_ucache_get</span><span style="color: #007700">(</span><span style="color: #0000BB">$array1</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">wincache_ucache_clear</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">wincache_ucache_get</span><span style="color: #007700">(</span><span style="color: #0000BB">$array1</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
array(5) { [&quot;green&quot;]=&gt; int(1) 
           [&quot;red&quot;]=&gt; int(2) 
           [&quot;orange&quot;]=&gt; int(4) 
           [&quot;blue&quot;]=&gt; int(8) 
           [&quot;cyan&quot;]=&gt; int(16) } 
bool(true) 
bool(false) 
</pre></div>
    </div>    
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.wincache-ucache-clear-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="wincache_ucache_set.html" class="function" rel="rdfs-seeAlso">wincache_ucache_set()</a> - Adds a variable in user cache and overwrites a variable if it already exists in the cache</span></li>
    <li class="member"><span class="function"><a href="wincache_ucache_add.html" class="function" rel="rdfs-seeAlso">wincache_ucache_add()</a> - Adds a variable in user cache only if variable does not already exist in the cache</span></li>
    <li class="member"><span class="function"><a href="wincache_ucache_delete.html" class="function" rel="rdfs-seeAlso">wincache_ucache_delete()</a> - Deletes variables from the user cache</span></li>
    <li class="member"><span class="function"><a href="wincache_ucache_get.html" class="function" rel="rdfs-seeAlso">wincache_ucache_get()</a> - Gets a variable stored in the user cache</span></li>
    <li class="member"><span class="function"><a href="wincache_ucache_exists.html" class="function" rel="rdfs-seeAlso">wincache_ucache_exists()</a> - Checks if a variable exists in the user cache</span></li>
    <li class="member"><span class="function"><a href="wincache_ucache_meminfo.html" class="function" rel="rdfs-seeAlso">wincache_ucache_meminfo()</a> - Retrieves information about user cache memory usage</span></li>
    <li class="member"><span class="function"><a href="wincache_ucache_info.html" class="function" rel="rdfs-seeAlso">wincache_ucache_info()</a> - Retrieves information about data stored in the user cache</span></li>    
   </ul>
  </p>
 </div>


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